foucault's pendulum

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a pendulum on a long wire, free to move in any direction; the plane of its motion appears to turn (clockwise in the Northern Hemisphere) as the world turns beneath it
Foucault pendulum
Foucault's pendulum
Foucault pendulum
A simple pendulum suspended from a long wire and set into motion along a meridian. The plane of motion appears to turn clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere, demonstrating the axial rotation of the earth. Large pendulum that is free to swing in any direction. As it swings back and forth, the earth rotates beneath it, so its perpendicular plane of swing rotates in relation to the earth's surface. Devised by J.-B.-L. Foucault in 1851, it provided the first laboratory demonstration that the earth spins on its axis. A Foucault pendulum always rotates clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere (a consequence of the Coriolis force). The rate of rotation depends on the latitude, becoming slower as the pendulum is placed closer to the equator; at the equator, a Foucault pendulum does not rotate
foucault pendulum
pendulum with a long wire; can swing in any direction; the change in the swing plane demonstrates the earth's rotation
foucault's pendulum

    Heceleme

    foucault's pen·du·lum

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    Etimoloji

    () From the French physicist Jean Bernard Léon Foucault

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